Carrot monster, You're asking very interesting questions. Could you please try to pick out matching tags for them, not just generic things like torah or torah-study? Also, if you see red underlined words when you're typing your question in, it might mean that you need to check their spelling.
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Isaac MosesApr 15 '10 at 0:03

The premise of this question is that everything G-d creates has a purpose. Unless you'd like to challenge that premise from a Jewish perspective, this answer does not really address the question. Alternatively, if you can find a Jewish source for "As pets", then that might work.
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HodofHodFeb 28 '12 at 15:49

That is one reason, sure; in general, Hashem gave us rules of what to do and not to do, in order to refine us (Bereishis Rabbah 44:1).

But aside from that, the various non-kosher animals have their roles to play in the ecosystem - as predators, scavengers, etc. Also, some of them are also useful to us in capacities other than food: consider horses, camels, etc.